A homegrown jihad plotter from Seattle who once agreed to cooperate with the feds – only to flee the country while on parole last year – copped a plea yesterday to providing material support to terrorists.

Earnest James Ujaama, 41, who was nabbed in Belize, admitted in Manhattan federal court that he plotted to set up a terrorist-training camp in Bly, Ore., in 1999.

He said he stockpiled weapons and scoped out a site to “assess its suitability” for use by Abu Hamza, a London-based cleric now fighting extradition to New York.

Ujaama added that the camp was intended to provide fighters with instruction in Islam, “military-style training,” and “enough familiarity with weapons to fight on the front lines in Afghanistan.”